Microsoft allows moving current Profile Container implementations to Cloud Cache. To start using Cloud Cache, replace the VHDLocations setting with CCDLocations. CCDLocations and VHDLocations may not be used in the same implementation simultaneously.
A Cloud Cache Provider contains both the profile container and associated metadata, while a traditional VHDLocation contains only the profile container. If Cloud Cache points to profile containers without metadata, the metadata will be created. When the metadata is added, the Profile Container location is converted to a Cloud Cache provider.
If a user has profile containers in more than one CCDLocation, the profile container listed first in CCDLocations will be updated to a Cloud Cache provider. All other profile containers in the same CCDLocations string will be deleted and replaced from the first Cloud Cache Provider.
There's no mechanism to merge multiple profile containers into a single profile.